U.S. patent application number 14/975636 was filed with the patent office on 2016-12-29 for image displaying method and system.
The applicant listed for this patent is Shanghai AVIC OPTO Electronics Co., Ltd., Tianma Micro-Electronics Co., Ltd.. Invention is credited to Huijun Jin.
Application Number | 20160379601 14/975636 |
Document ID | / |
Family ID | 54219629 |
Filed Date | 2016-12-29 |
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United States Patent
Application |
20160379601 |
Kind Code |
A1 |
Jin; Huijun |
December 29, 2016 |
IMAGE DISPLAYING METHOD AND SYSTEM
Abstract
An image displaying method and system. The method includes:
obtaining an image to be displayed, and dividing equally the image
to be displayed into a plurality of first sub-images along a first
direction; obtaining position information of a view point relative
to the flat display and parameter information of a first virtual
section line segment of the flat display; calculating a
compensation ratio along the first direction for each first
sub-image of the image to be displayed, according to the position
information of the view point relative to the flat display and the
parameter information of the first virtual section line segment;
and compensating each first sub-image of the image along the first
direction, and displaying the compensated first sub-image on the
flat display, so that visual angles at the view point with respect
to the compensated first sub-images are the same.
Inventors: |
Jin; Huijun; (Shanghai,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Shanghai AVIC OPTO Electronics Co., Ltd.
Tianma Micro-Electronics Co., Ltd. |
Shanghai
Shenzhen |
|
CN
CN |
|
|
Family ID: |
54219629 |
Appl. No.: |
14/975636 |
Filed: |
December 18, 2015 |
Current U.S.
Class: |
345/667 |
Current CPC
Class: |
G09G 2320/068 20130101;
G09G 2354/00 20130101; G09G 5/00 20130101; G09G 3/003 20130101;
G09G 5/38 20130101; G09G 2320/028 20130101; G09G 2320/0261
20130101; G09G 5/14 20130101 |
International
Class: |
G09G 5/14 20060101
G09G005/14; G09G 3/00 20060101 G09G003/00; G09G 5/38 20060101
G09G005/38 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 29, 2015 |
CN |
201510372456.5 |
Claims
1. An image displaying method, comprising: obtaining an image to be
displayed on a flat display, and dividing equally the image to be
displayed into a plurality of first sub-images along a first
direction parallel to a display surface of the flat display;
obtaining position information of a view point relative to the flat
display and parameter information of a first virtual section line
segment of the flat display, wherein the first virtual section line
segment has two endpoints located on a frame of the flat display,
is extended along the first direction, and is extended through a
projection of the view point onto the flat display; calculating a
compensation ratio along the first direction for each first
sub-image of the image to be displayed, according to the position
information of the view point relative to the flat display and the
parameter information of the first virtual section line segment;
and compensating each first sub-image of the image along the first
direction according to the compensation ratio along the first
direction for the first sub-image of the image, and displaying the
compensated first sub-image on the flat display, so that visual
angles at the view point with respect to the compensated first
sub-images are equal.
2. The method of claim 1, wherein a size of each compensated first
sub-image of the image along the first direction is larger than or
equal to a size of one sub-pixel of the flat display along the
first direction.
3. The method of claim 2, further comprising: dividing equally the
image to be displayed into a plurality of second sub-images along a
second direction parallel to the display surface of the flat
display and perpendicular to the first direction; obtaining
parameter information of a second virtual section line segment of
the flat display, wherein the second virtual section line segment
has two endpoints located on the frame of the display device, is
extended along the second direction, and is extended through the
projection of the view point onto the flat display; calculating a
compensation ratio along the second direction for each second
sub-image of the image, according to the position information of
the view point relative to the flat display and the parameter
information of the second virtual section line segment; and
compensating each second sub-image of the image along the second
direction according to the compensation ratio along the second
direction for the second sub-image of the image, and displaying the
compensated second sub-image on the flat display, so that visual
angles at the view point with respect to the compensated second
sub-images are equal.
4. The method of claim 3, wherein a size of each compensated second
sub-image of the image along the second direction is larger than or
equal to a size of one sub-pixel of the flat display along the
second direction.
5. The method of claim 1, wherein the position information of the
view point relative to the flat display is obtained by a position
detector.
6. The method of claim 5, wherein the position detector comprises
at least two cameras.
7. The method of claim 5, wherein the calculating a compensation
ratio along the first direction for each first sub-image of the
image to be displayed according to the position information of the
view point relative to the flat display and the parameter
information of the first virtual section line segment comprises:
calculating an angle between the first virtual section line segment
and a line extending through both the view point and one of the two
endpoints of the first virtual section line segment and an angle
between the first virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the first virtual section line segment, according to the position
information of the view point relative to the flat display and the
parameter information of the first virtual section line segment;
determining a first virtual curved display plane according to the
parameter information of the first virtual section line segment,
the angle between the first virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the first virtual section line segment, and the angle between
the first virtual section line segment and a line extending through
both the view point and the other of the two endpoints of the first
virtual section line segment, wherein the first virtual curved
display plane extends along a first curved line; dividing equally
the first virtual curved display plane into a plurality of first
elemental display units along the first curved line, and obtaining
an arc length of each of the first elemental display units along
the first curved line, wherein each of the plurality of first
elemental display units corresponds to one of the plurality of
first sub-images; and calculating the compensation ratio along the
first direction for each first sub-image of the image to be
displayed, according to the parameter information of the first
virtual section line segment, the angle between the first virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the first virtual section
line segment, the angle between the first virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the first virtual section line
segment, and the arc length of each of the first elemental display
units along the first direction.
8. The method of claim 7, wherein the calculating the compensation
ratio along the first direction for each first sub-image of the
image to be displayed, according to the parameter information of
the first virtual section line segment, the angle between the first
virtual section line segment and a line extending through both the
view point and one of the two endpoints of the first virtual
section line segment, the angle between the first virtual section
line segment and a line extending through both the view point and
the other of the two endpoints of the first virtual section line
segment, and the arc length of each of the first elemental display
units along the first direction comprises: calculating a curvature
radius of the first virtual curved display plane and a distance
from the view point to the flat display, according to the parameter
information of the first virtual section line segment, the angle
between the first virtual section line segment and a line extending
through both the view point and one of the two endpoints of the
first virtual section line segment, and the angle between the first
virtual section line segment and a line extending through both the
view point and the other of the two endpoints of the first virtual
section line segment; determining a positioning sequence number of
each first sub-image of the image along the first direction
according to the parameter information of the first virtual section
line segment, the angle between the first virtual section line
segment and a line extending through both the view point and one of
the two endpoints of the first virtual section line segment, and
the angle between the first virtual section line segment and a line
extending through both the view point and the other of the two
endpoints of the first virtual section line segment; and
calculating the compensation ratio along the first direction for
each first sub-image of the image to be displayed, according to the
positioning sequence number of each first sub-image of the image
along the first direction, the curvature radius of the first
virtual curved display plane, the distance from the view point to
the flat display, and the arc length of each of the first elemental
display units along the first direction.
9. The method of claim 4, wherein the calculating a compensation
ratio along the second direction for each second sub-image of the
image according to the position information of the view point
relative to the flat display and the parameter information of the
second virtual section line segment comprises: calculating an angle
between the second virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the second virtual section line segment, and an angle between
the second virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the second virtual section line segment, according to the position
information of the view point relative to the flat display and the
parameter information of the second virtual section line segment;
determining a second virtual curved display plane according to the
parameter information of the second virtual section line segment,
the angle between the second virtual section line segment and the
line extending through both the view point and one of the two
endpoints of the second virtual section line segment, and the angle
between the second virtual section line segment and the line
extending through both the view point and the other of the two
endpoints of the second virtual section line segment, wherein the
second virtual curved display plane contains the second curved
line; dividing equally the second virtual curved display plane into
a plurality of second elemental display units along the second
direction, and obtaining an arc length of each of the second
elemental display units along the second direction, wherein each of
the plurality of second elemental display units corresponds to one
of the plurality of second sub-images; and calculating a
compensation ratio along the second direction for each second
sub-image of the image to be displayed, according to the parameter
information of the second virtual section line segment, the angle
between the second virtual section line segment and the line
extending through both the view point and one of the two endpoints
of the second virtual section line segment, the angle between the
second virtual section line segment and the line extending through
both the view point and the other of the two endpoints of the
second virtual section line segment, and the arc length of each of
the second elemental display units along the second direction.
10. The method of claim 9, wherein the calculating a compensation
ratio along the second direction for each second sub-image of the
image to be displayed, according to the parameter information of
the second virtual section line segment, the angle between the
second virtual section line segment and the line extending through
both the view point and one of the two endpoints of the second
virtual section line segment, the angle between the second virtual
section line segment and the line extending through both the view
point and the other of the two endpoints of the second virtual
section line segment, and the arc length of each of the second
elemental display units along the second direction comprises:
calculating a curvature radius of the second virtual curved display
plane, according to the parameter information of the second virtual
section line segment, the angle between the second virtual section
line segment and a line extending through both the view point and
one of the two endpoints of the second virtual section line
segment, and the angle between the second virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment; determining a positioning sequence number of each second
sub-image of the image along the second direction according to the
parameter information of the second virtual section line segment,
the angle between the second virtual section line segment and a
line extending through both the view point and one of the two
endpoints of the second virtual section line segment, and the angle
between the second virtual section line segment and a line
extending through both the view point and the other of the two
endpoints of the second virtual section line segment; and
calculating the compensation ratio along the second direction for
each second sub-image of the image to be displayed, according to
the positioning sequence number of each second sub-image of the
image along the second direction, the curvature radius of the
second virtual curved display plane, the distance from the view
point to the flat display, and the arc length of each of the second
elemental display units along the second direction.
11. An image displaying system, comprising a flat display, a
position detector and an image compensation chip; wherein the
position detector is disposed on a frame of the flat display and
configured to obtain position information of a view point relative
to the flat display; the image compensation chip is disposed on a
driving panel of the flat display and configured to: divide equally
an image to be displayed on the flat display into a plurality of
first sub-images along a first direction parallel to a display
surface of the flat display; calculate a compensation ratio along
the first direction for each first sub-image of the image to be
displayed according to the position information of the view point
relative to the flat display and parameter information of a first
virtual section line segment of the flat display; and compensate
each first sub-image of the image along the first direction,
wherein the first direction is parallel to the display surface of
the flat display, and the first virtual section line segment has
two endpoints located on the frame of the flat display, is extended
along the first direction, and is extended through a projection of
the view point onto the flat display; and the flat display is
configured to display the compensated first sub-images so that
visual angles at the view point for the compensated first
sub-images are equal.
12. The system of claim 11, wherein the position detector comprises
at least two cameras.
13. The system of claim 12, wherein a size of each compensated
first sub-image of the image along the first direction is larger
than or equal to a size of one sub-pixel of the flat display along
the first direction.
14. The system of claim 13, wherein, the image compensation chip is
further configured to: divide equally the image to be displayed
into a plurality of second sub-images along a second direction
parallel to the display surface of the flat display and
perpendicular to the first direction; calculate a compensation
ratio along the second direction for each second sub-image of the
image according to the position information of the view point
relative to the flat display and the parameter information of a
second virtual section line segment of the flat display; and
compensate each second sub-image of the image along the second
direction, wherein the second virtual section line segment has two
endpoints located on the frame of the display device, is extended
along the second direction, and is extended through the projection
of the view point onto the flat display; and the flat display is
configured to display the compensated second sub-images, so that
visual angles at the view point for the compensated second
sub-images are equal.
15. The system of claim 14, wherein a size of each compensated
second sub-image of the image along the second direction is larger
than or equal to a size of one sub-pixel of the flat display along
the second direction.
16. The system of claim 14, wherein the image compensation chip
comprises an image capture module, an image division module, a
calculation module and a compensation module; wherein, the image
capture module is configured to capture an image to be displayed;
the image division module is configured to divide equally the
captured image into a plurality of first sub-images along the first
direction; and divide equally the captured image into a plurality
of second sub-images along a second direction; the calculation
module is configured to calculate a compensation ratio along the
first direction for each first sub-image of the image according to
the position information of the view point relative to the flat
display and the parameter information of the first virtual section
line segment; and calculate a compensation ratio along the second
direction for each second sub-image of the image according to the
position information of the view point relative to the flat display
and the parameter information of the second virtual section line
segment; and the compensation module is configured to compensate
each first sub-image of the image along the first direction
according to the compensation ratio along the first direction for
the first sub-image of the image; and compensate each second
sub-image of the image along the second direction according to the
compensation ratio along the second direction for the second
sub-image of the image.
17. The system of claim 16, further comprising a storage device
configured to store the parameter information of the first virtual
section line segment of the flat display and the parameter
information of the second virtual section line segment of the flat
display.
18. The system of claim 16, wherein the calculation module
comprises: an angle information calculation unit configured to
calculate an angle between the first virtual section line segment
and a line extending through both the view point and one of the two
endpoints of the first virtual section line segment and an angle
between the first virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the first virtual section line segment, according to the position
information of the view point relative to the flat display and the
parameter information of the first virtual section line segment of
the flat display; and calculate an angle between the second virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the second virtual section
line segment, and an angle between the second virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment, according to the position information of the view point
relative to the flat display and the parameter information of the
second virtual section line segment of the flat display; a virtual
curved display plane calculation unit configured to determine a
first virtual curved display plane, according to the parameter
information of the first virtual section line segment of the flat
display, the angle between the first virtual section line segment
and a line extending through both the view point and one of the two
endpoints of the first virtual section line segment, and the angle
between the first virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the first virtual section line segment; and determine a second
virtual curved display plane, according to the parameter
information of the second virtual section line segment of the flat
display, the angle between the second virtual section line segment
and the line extending through both the view point and one of the
two endpoints of the second virtual section line segment, and the
angle between the second virtual section line segment and the line
extending through both the view point and the other of the two
endpoints of the second virtual section line segment; an elemental
display unit division unit configured to divide equally the first
virtual curved display plane into a plurality of first elemental
display units along a first curved line, and obtain an arc length
of each of the first elemental display units along the first curved
line, wherein each of the plurality of first elemental display
units corresponds to one of the plurality of first sub-images; and
divide equally the second virtual curved display plane into a
plurality of second elemental display units along a second
direction, and obtain an arc length of each of the second elemental
display units along the second direction, wherein each of the
plurality of second elemental display units corresponds to one of
the plurality of second sub-images; and a compensation ratio
calculation unit configured to calculate the compensation ratio
along the first direction for each first sub-image of the image to
be displayed, according to the parameter information of the first
virtual section line segment of the flat display, the angle between
the first virtual section line segment and a line extending through
both the view point and one of the two endpoints of the first
virtual section line segment, the angle between the first virtual
section line segment and a line extending through both the view
point and the other of the two endpoints of the first virtual
section line segment, and the arc length of each of the first
elemental display units along the first direction; and calculate a
compensation ratio along the second direction for each second
sub-image of the image to be displayed, according to the parameter
information of the second virtual section line segment of the flat
display, the angle between the second virtual section line segment
and the line extending through both the view point and one of the
two endpoints of the second virtual section line segment, the angle
between the second virtual section line segment and the line
extending through both the view point and the other of the two
endpoints of the second virtual section line segment, and the arc
length of each of the second elemental display units along the
second direction.
19. The system of claim 18, wherein the compensation ratio
calculation unit comprises: a distance calculation sub-unit
configured to calculate a curvature radius of the first virtual
curved display plane and a distance from the view point to the flat
display, according to the parameter information of the first
virtual section line segment, the angle between the first virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the first virtual section
line segment, and the angle between the first virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the first virtual section line
segment; and calculate a curvature radius of the second virtual
curved display plane, according to the parameter information of the
second virtual section line segment, the angle between the second
virtual section line segment and a line extending through both the
view point and one of the two endpoints of the second virtual
section line segment, and the angle between the second virtual
section line segment and a line extending through both the view
point and the other of the two endpoints of the second virtual
section line segment; a positioning sequence number sub-unit
configured to determine a positioning sequence number of each first
sub-image of the image along the first direction according to the
parameter information of the first virtual section line segment,
the angle between the first virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the first virtual section line segment, and the angle between
the first virtual section line segment and a line extending through
both the view point and the other of the two endpoints of the first
virtual section line segment; and determine a positioning sequence
number of each second sub-image of the image along the second
direction according to the parameter information of the second
virtual section line segment, the angle between the second virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the second virtual section
line segment, and the angle between the second virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment; and a compensation ratio calculation sub-unit configured
to calculate the compensation ratio along the first direction for
each first sub-image of the image to be displayed, according to the
positioning sequence number of each first sub-image of the image
along the first direction, the curvature radius of the first
virtual curved display plane, the distance from the view point to
the flat display, and the arc length of each of the first elemental
display units along the first direction; and calculate the
compensation ratio along the second direction for each second
sub-image of the image to be displayed, according to the
positioning sequence number of each second sub-image of the image
along the second direction, the curvature radius of the second
virtual curved display plane, the distance from the view point to
the flat display, and the arc length of each of the second
elemental display units along the second direction.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to Chinese Application No.
201510372456.5, filed Jun. 29, 2015, which is herein incorporated
by reference in its entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of display
technologies and, in particular, to an image displaying method and
system.
BACKGROUND
[0003] Electronic display devices have been widely used in various
electronic appliances, such as a liquid crystal television, a
liquid crystal display, a digital poster board, a laptop computer,
a personal digital assistance (PDA), a mobile phone, a digital
camera and an electronic book reader. Previously, a flat display,
such as a flat television and a flat liquid crystal display, was
dominant among display devices. However, a display effect of the
flat display is not perfect, because visual angles corresponding to
line segments of the same length displayed on the flat display are
different no matter where a viewer is in front of the flat display,
and hence the viewer perceives that the line segments have
different lengths. A curved-surface display has been proposed, and
a difference between the curved-surface display (such as, a
curved-surface television) and the flat display is that: for a
viewer at a proper position, the visual angles for objects of a
unit length displayed on the curved-surface display are identical
to each other, while the visual angles for the objects of a unit
length displayed on the flat display are different. Therefore, the
display effect of the flat display is inferior to that of the
curved-surface display. Due to difficulties in the process for
manufacturing the curved-surface display, the manufacturing cost of
the existing curved-surface display is rather expensive.
SUMMARY
[0004] The disclosure provides an image displaying method and
system so that the visual angels viewed by a viewer located at any
view point in front of the flat display with respect to the same
line segment of the image to be displayed along a first direction
are equal, thus the display effect of the curved-surface display is
achieved by the flat display, thereby reducing manufacturing cost
of the flat display.
[0005] In a first example, embodiments of the disclosure provide an
image displaying method, including: [0006] obtaining an image to be
displayed on a flat display, and dividing equally the image to be
displayed into a plurality of first sub-images along a first
direction parallel to a display surface of the flat display; [0007]
obtaining position information of a view point relative to the flat
display and parameter information of a first virtual section line
segment of the flat display, wherein the first virtual section line
segment has two endpoints located on a frame of the flat display,
is extended along the first direction, and is extended through a
projection of the view point onto the flat display; [0008]
calculating a compensation ratio along the first direction for each
first sub-image of the image to be displayed, according to the
position information of the view point relative to the flat display
and the parameter information of the first virtual section line
segment; and [0009] compensating each first sub-image of the image
along the first direction according to the compensation ratio along
the first direction for the first sub-image of the image, and
displaying the compensated first sub-image on the flat display, so
that visual angles at the view point with respect to the
compensated first sub-images are equal.
[0010] In a second example, embodiments of the disclosure provide
an image displaying system, including a flat display, a position
detector and an image compensation chip; wherein the position
detector is disposed on a frame of the flat display and configured
to obtain position information of a view point relative to the flat
display; the image compensation chip is disposed on a driving panel
of the flat display and configured to: divide equally an image to
be displayed on the flat display into a plurality of first
sub-images along a first direction parallel to a display surface of
the flat display; calculate a compensation ratio along the first
direction for each first sub-image of the image to be displayed
according to the position information of the view point relative to
the flat display and parameter information of a first virtual
section line segment of the flat display; and compensate each first
sub-image of the image along the first direction, wherein the first
direction is parallel to the display surface of the flat display,
and the first virtual section line segment has two endpoints
located on the frame of the flat display, is extended along the
first direction, and is extended through a projection of the view
point onto the flat display; and the flat display is configured to
display the compensated first sub-images so that visual angles at
the view point for the compensated first sub-images are equal.
[0011] The disclosure divides equally the image to be displayed
into a plurality of first sub-images along a first direction,
obtains position information of a view point relative to the flat
display and parameter information of a first virtual section line
segment of the flat display, calculates a compensation ratio along
the first direction for each first sub-image of the image to be
displayed, compensates each first sub-image of the image along the
first direction, and displays the compensated first sub-image on
the flat display, so that visual angles at the view point with
respect to the compensated first sub-images are equal, thus the
display effect of the curved-surface display is achieved by the
flat display, thereby reducing manufacturing cost of the flat
display.
[0012] While multiple embodiments are disclosed, still other
embodiments of the disclosure will become apparent to those skilled
in the art from the following detailed description, which shows and
describes illustrative embodiments of the disclosure. Accordingly,
the drawings and detailed description are to be regarded as
illustrative in nature and not restrictive.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a schematic flow diagram showing an image
displaying method, according to embodiments of the disclosure;
[0014] FIG. 2 is a schematic diagram showing equal division of the
image along the first direction, according to embodiments of the
disclosure;
[0015] FIG. 3 is a schematic diagram of the first virtual section
line segment of the flat display, according to embodiments of the
disclosure;
[0016] FIG. 4 is a schematic diagram showing the compensation for
each first sub-image of the image to be displayed along the first
direction, according to embodiments of the disclosure;
[0017] FIG. 5 is a schematic diagram showing the first virtual
section line segment and the second virtual section line segment of
a flat display, according to embodiments of the disclosure;
[0018] FIG. 6 is a schematic diagram showing the compensation along
the second direction for each second sub-image of an image to be
displayed, according to embodiments of the disclosure;
[0019] FIG. 7 is a schematic flow diagram of calculating the
compensation ratio along a first direction for each first sub-image
of an image to be displayed, according to embodiments of the
disclosure;
[0020] FIG. 8 is a schematic diagram showing a method for
calculating the compensation ratio along the first direction for
each first sub-image of an image to be displayed, according to
embodiments of the disclosure; and
[0021] FIG. 9 is a schematic diagram showing the structure of an
image displaying system, according to embodiments of the
disclosure.
[0022] While the disclosure is amenable to various modifications
and alternative forms, specific embodiments have been shown by way
of example in the drawings and are described in detail below. The
intention, however, is not to limit the disclosure to the
particular embodiments described. On the contrary, the disclosure
is intended to cover all modifications, equivalents, and
alternatives falling within the scope of the disclosure as defined
by the appended claims.
DETAILED DESCRIPTION
[0023] The disclosure will be further illustrated through specific
embodiments below in conjunction with the accompanying drawings. It
may be understood that specific embodiments described herein are
merely for explaining the disclosure rather than limiting the
disclosure. In addition, it should be illustrated that merely
partial content associated with the disclosure rather than all
content is illustrated in the accompanying drawings for ease of
description.
[0024] Embodiments of the disclosure provide an image displaying
method, and FIG. 1 is a schematic flow diagram showing an image
displaying method, according to embodiments of the disclosure. As
shown in FIG. 1, the method includes Steps 110 to 140 below.
[0025] Step 110 includes obtaining an image to be displayed on a
flat display, and dividing equally the image to be displayed into a
plurality of first sub-images along a first direction parallel to a
display surface of the flat display.
[0026] FIG. 2 is a schematic diagram showing equal division of the
image along the first direction, according to embodiments of the
disclosure. For example, if the flat display is rectangular, the
first direction is set to be parallel to a side of the flat
display, and the obtained image to be displayed is divided into a
plurality of first sub-images along the first direction, each first
sub-image having the same length in the first direction. It is
noted that FIG. 2 is merely an example for the sake of describing
the implementation of Step 110 rather than a limitation to the
embodiments of the disclosure. Besides rectangle, the flat display
can further have other shapes. Embodiments of the disclosure make
no limitation to the shape of the flat display, as long as it is
ensured that the first direction can be parallel to the display
surface of the flat display.
[0027] Step 120 includes obtaining position information of a view
point relative to the flat display and parameter information of a
first virtual section line segment of the flat display, where the
first virtual section line segment has two endpoints located on a
frame of the flat display, is extended along the first direction,
and is extended through a projection of the view point onto the
flat display.
[0028] FIG. 3 is a schematic diagram of the first virtual section
line segment of the flat display, according to embodiments of the
disclosure. As shown in FIG. 3, the first virtual section line
segment (i.e. a dotted line XX') is parallel to the first direction
and is extended through a projection of the view point onto the
flat display. The first virtual section line segment has two
endpoints located on the frame of the flat display. The parameter
information of the first virtual section line segment of the flat
display can include information such as the length of the first
virtual section line segment or coordinates of endpoints of the
first virtual section line segment.
[0029] Step 130 includes calculating a compensation ratio along the
first direction for each first sub-image of the image to be
displayed, according to the position information of the view point
relative to the flat display and the parameter information of the
first virtual section line segment.
[0030] The compensation ratio along the first direction for each
first sub-image of the image to be displayed is calculated
according to the position information of the view point relative to
the flat display (such as coordinates of the position of the view
point and a distance from the view point to the flat display) and
the parameter information of the first virtual section line segment
(such as the length of the first virtual section line segment and
coordinates of endpoints of the first virtual section line
segment).
[0031] Step 140 includes compensating each first sub-image of the
image along the first direction according to the compensation ratio
along the first direction for the first sub-image of the image, and
displaying the image on the flat display, so that visual angles at
the view point with respect to the compensated first sub-images are
equal, i.e., the same.
[0032] As such, after the compensation ratio along the first
direction for each first sub-image of the image to be displayed is
calculated in Step 130, each first sub-image of the image is
compensated along the first direction according to the compensation
ratio, so that visual angles at the view point with respect to the
compensated first sub-images are equal. FIG. 4 is a schematic
diagram showing the compensation for each first sub-image of the
image to be displayed along the first direction, according to
embodiments of the disclosure, and shows a sectional view taken
along the first virtual section line segment XX' of FIG. 3. As
shown in FIG. 4, illustratively, the image to be displayed is
divided equally into five first sub-images B2, B1, A1, A2 and A3
along the first direction, and the lengths of the five first
sub-images B2, B1, A1, A2 and A3 along the first direction are
identical. The compensation ratios along the first direction for
the first sub-images B2, B1, A1, A2 and A3 are calculated in Step
130 as k.sub.B2, k.sub.B1, k.sub.A1, k.sub.A2 and k.sub.A3,
respectively, so that compensated first sub-images B2', B1', A1',
A2' and A3' are obtained through multiplying the lengths of the
first sub-images B2, B1, A1, A2 and A3 along the first direction by
the corresponding compensation ratios k.sub.B2, k.sub.B1, k.sub.A1,
k.sub.A2 and k.sub.A3 along the first direction. Referring to FIG.
4, visual angles .beta.2, .beta.1, .alpha.1, .alpha.2 and .alpha.3
at the view point corresponding to the respective lengths of the
compensated first sub-images B2', B1', A1', A2' and A3' along the
first direction are equal. Regardless of whether the view point
aligns with the center of the flat display or not, it can be
implemented that the visual angles for the compensated first
sub-images along the first direction are identical, i.e. the
display effect of the curved-surface display is achieved by the
flat display.
[0033] It is noted that FIG. 4, illustratively, shows equal
division of the image to be displayed into five first sub-images,
which is not to be understood as a limitation to the disclosure.
Embodiments of the disclosure make no limitation to the number of
the first sub-images equally divided by the image to be displayed
along the first direction, and the higher the number of the first
sub-images of the image is, the finer the image as displayed will
be, and the better the display effect of the flat display will
be.
[0034] On the basis of the above embodiments, the size of each
compensated first sub-image of the image along the first direction
is larger than or equal to the size of one sub-pixel of the flat
display along the first direction. In embodiments, illustratively,
one pixel generally includes a plurality of sub-pixels, for
example, one pixel includes a red sub-pixel, a blue sub-pixel and a
green sub-pixel. In such configurations, advantageously, each
compensated first sub-image of the image can be completely
displayed on the display device, thus avoiding the problem that
some region cannot be displayed since the compensated first
sub-image of the image is smaller than the size of one sub-pixel,
because the first sub-images equally divided from the image along
the first direction are excessive.
[0035] Embodiments of the disclosure further provide an image
display method, which is based on the above embodiments and is an
optimized variant of the above embodiments, and the method further
includes:
[0036] Step 210 includes dividing equally the image to be displayed
into a plurality of second sub-images along a second direction
parallel to the display surface of the flat display and
perpendicular to the first direction;
[0037] Step 220 includes obtaining parameter information of a
second virtual section line segment of the flat display, where the
second virtual section line segment has two endpoints located on
the frame of the display device, is extended along the second
direction, and is extended through a projection of the view point
onto the flat display;
[0038] Step 230 includes calculating a compensation ratio along the
second direction for each second sub-image of the image according
to the position information of the view point relative to the flat
display and the parameter information of the second virtual section
line segment; and
[0039] Step 240 includes compensating each second sub-image of the
image along the second direction according to the compensation
ratio along the second direction for the second sub-image of the
image, and displaying the image on the flat display, so that visual
angles at the view point with respect to the compensated second
sub-images are equal.
[0040] It should be noted that, Step 210, Step 220, Step 230 and
Step 240 may be performed simultaneously with Step 110, Step 120,
Step 130 and Step 140, respectively, or Step 210, Step 220, Step
230 and Step 240 may be performed alternatively with Step 110, Step
120, Step 130 and Step 140.
[0041] FIG. 5 is a schematic diagram showing the first virtual
section line segment and the second virtual section line segment of
a flat display. As shown in FIG. 5, the first virtual section line
segment (the dotted line XX' in FIG. 5) is parallel to the first
direction and is extended through the projection of the view point
onto the flat display, and the second virtual section line segment
(the dotted line YY' in FIG. 5) is parallel to the second direction
and is extended through the projection of the view point onto the
flat display.
[0042] FIG. 6 is a schematic diagram showing the compensation along
the second direction for each second sub-image of an image to be
displayed, according to embodiments of the disclosure, and shows a
sectional view taken along the second virtual section line segment
YY' in FIG. 5. In embodiments of the disclosure, in addition that
each first sub-image of the image to be displayed is compensated
along the first direction, each second sub-image of the image is
compensated along the second direction. As for the compensation for
each first sub-image of the image to be displayed along the first
direction, reference can be made to FIG. 4 and the corresponding
description, which will not be described again here. As shown in
FIG. 6, illustratively, the image to be displayed is divided
equally into six second sub-images C3, C2, C1, D1, D2 and D3 along
the second direction, and the lengths of the six second sub-images
along the second direction are equal to each other. The
compensation ratios along the second direction for the second
sub-images C3, C2, C1, D1, D2 and D3 are calculated in Step 230 as
.lamda..sub.C3, .lamda..sub.C2, .lamda..sub.C1, .lamda..sub.D1,
.lamda..sub.D2 and .lamda..sub.D3, respectively, so that
compensated second sub-images C3', C2', C1', D1', D2', D3' are
obtained through multiplying the lengths of the second sub-images
C3, C2, C1, D1, D2, D3 along the second direction by the
corresponding compensation ratios .lamda..sub.C3, .lamda..sub.C2,
.lamda..sub.C1, .lamda..sub.D1, .lamda..sub.D2 and .lamda..sub.D3
along the second direction. Visual angles .gamma.3, .gamma.2,
.gamma.1, .delta.1, .delta.2, .delta.3 at the view point
corresponding to the respective lengths of the compensated second
sub-images C3', C2', C1', D1', D2', D3' along the second direction
are equal. Regardless of whether the view point aligns with the
center of the flat display or not, it can be implemented that the
visual angles for the compensated second sub-images along the
second direction are identical. Therefore, embodiments of the
disclosure can make the flat display simultaneously achieve the
display effect of the curved-surface display in both the first
direction and the second direction. It is noted that FIG. 6,
illustratively, shows equal division of the image to be displayed
into six second sub-images, which is not intended as a limitation
to the disclosure. Embodiments of the disclosure makes no
limitation to the number of the second sub-images equally divided
by the image to be displayed along the second direction, and the
higher the number of the second sub-images of the image is, the
finer the image as displayed will be, and the better the display
effect of the flat display will be.
[0043] On the basis of the above embodiments, further, the size of
each compensated second sub-image of the image along the second
direction is larger than or equal to the size of one sub-pixel of
the flat display along the second direction. In such configuration,
advantageously, each compensated second sub-image of the image can
be completely displayed on the flat display, thus avoiding the
problem that some region cannot be displayed since the compensated
second sub-images of the image is smaller than the size of one
sub-pixel, because the second sub-images divided equally from the
image along the second direction are excessive
[0044] On the basis of the above embodiments, optionally, the
position information of the view point relative to the flat display
can be obtained by a position detector. In particular, position
information of the view point relative to the flat display can be
obtained by at least two cameras.
[0045] On the basis of the above embodiments, embodiments of the
disclosure provide a method for calculating the compensation ratio
along a first direction for each first sub-image of an image to be
displayed, and FIG. 7 is a schematic flow diagram of calculating
the compensation ratio along a first direction for each first
sub-image of an image to be displayed, according to embodiments of
the disclosure. As shown in FIG. 7, the method includes Steps 310
to 340 below.
[0046] Step 310 includes calculating an angle between the first
virtual section line segment and a line extending through both the
view point and one of the two endpoints of the first virtual
section line segment and an angle between the first virtual section
line segment and a line extending through both the view point and
the other of the two endpoints of the first virtual section line
segment, according to the position information of the view point
relative to the flat display and the parameter information of the
first virtual section line segment.
[0047] FIG. 8 is a schematic diagram showing a method for
calculating the compensation ratio along the first direction for
each first sub-image of an image to be displayed. As shown in FIG.
8, an angle .theta.2 is formed between the first virtual section
line segment l3 and the line l1 connecting the view point P to the
endpoint of the first virtual section line segment l3, and the
angle .theta.1 is formed between the first virtual section line
segment l3 and the line l2 connecting the view point P to the other
endpoint of the first virtual section line segment l3. In
particular, the position information of the view point relative to
the flat display can be obtained by at least two cameras, and the
angles .theta.1 and .theta.2 are calculated by the parameter
information of the first virtual section line segment.
[0048] Step 320 includes determining a first virtual curved display
plane according to the parameter information of the first virtual
section line segment, the angle between the first virtual section
line segment and a line extending through both the view point and
one of the two endpoints of the first virtual section line segment,
and the angle between the first virtual section line segment and a
line extending through both the view point and the other of the two
endpoints of the first virtual section line segment, where, the
first virtual curved display plane contains a first curved
line.
[0049] As shown in FIG. 8, the first virtual curved display plane
corresponding to the flat display is determined according to the
angles .theta.1 and .theta.2 and the parameter information of the
first virtual section line segment l3. With reference to FIG. 8, an
edge of the first virtual curved display plane overlaps an edge of
the flat display and contains the first curved line 14.
[0050] Step 330 includes dividing equally the first virtual curved
display plane into a plurality of first elemental display units
along the first curved line, and obtaining the arc length of each
of the first elemental display units along the first curved line,
where each of the plurality of first elemental display units
corresponds to one of the plurality of first sub-images.
[0051] Step 340 includes calculating the compensation ratio along
the first direction for each first sub-image of the image to be
displayed, according to the parameter information of the first
virtual section line segment, the angle between the first virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the first virtual section
line segment, the angle between the first virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the first virtual section line
segment, and the arc length of each of the first elemental display
units along the first direction.
[0052] As shown in FIG. 8, the first virtual curved display plane
is equally divided into a plurality of first elemental display
units along the first curved line 14, each of the plurality of
first elemental display units has an arc length of X0 along the
first curved line 14, and each of the plurality of first elemental
display units corresponds to one of the first sub-images. For sake
of description, FIG. 8 illustratively shows five first elemental
display units. The compensation ratio Bn along the first direction
for each first sub-image of the image to be displayed is calculated
according to the parameter information of the first virtual section
line segment (the length l3 of the first virtual section line
segment), the angle .theta.1 between the first virtual section line
segment and a line extending through both the view point and one of
the two endpoints of the first virtual section line segment, the
angle .theta.2 between the first virtual section line segment and a
line extending through both the view point and the other of the two
endpoints of the first virtual section line segment, and the arc
length X0 of each of the first elemental display units along the
first direction. Then the length of each first sub-image of the
image along the first direction is compensated through multiplying
the length of the first sub-image of the image along the first
direction by the corresponding compensation ratio k, so that visual
angles for the compensated first sub-images along the first
direction are equal.
[0053] On the basis of the above embodiments, optionally, the Step
340 of calculating the compensation ratio along the first direction
for each first sub-image of the image to be displayed, according to
the parameter information of the first virtual section line
segment, the angle between the first virtual section line segment
and a line extending through both the view point and one of the two
endpoints of the first virtual section line segment, the angle
between the first virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the first virtual section line segment, and the arc length of each
of the first elemental display units along the first direction can
include Steps 341 to 343 below.
[0054] Step 341 includes calculating a curvature radius of the
first virtual curved display plane and the distance from the view
point to the flat display, according to the parameter information
of the first virtual section line segment, the angle between the
first virtual section line segment and a line extending through
both the view point and one of the two endpoints of the first
virtual section line segment, and the angle between the first
virtual section line segment and a line extending through both the
view point and the other of the two endpoints of the first virtual
section line segment.
[0055] Referring to FIG. 8, the length of a side l1 opposite to the
angle .theta.1 is calculated as
11 = L 1 sec .theta. 2 tan .theta. 2 tan .theta. 1 + 1 ,
##EQU00001##
the length of a side l2 opposite to the angle .theta.2 is
calculated as
12 = L 1 sec .theta. 1 tan .theta. 1 tan .theta. 2 + 1 ,
##EQU00002##
and the distance C from the view point to the flat display is
calculated as
C = L 1 tan .theta. 1 tan .theta. 1 tan .theta. 2 + 1 = L 1 tan
.theta. 2 tan .theta. 2 tan .theta. 1 + 1 . ##EQU00003##
The maximum value between l1 and l2 i.e. the longer side of both
the sides l1 and l2 is used as the radius R of the first virtual
curved display plane. Illustratively, provided l2>l1 and
R = 12 = L 1 sec .theta. 1 tan .theta. 1 tan .theta. 2 + 1 ,
##EQU00004##
then the first virtual curved display plane is a curved plane which
has a center point located at the view point P and a radius R, and
contains the first curved line 14.
[0056] Step 342 includes determining a positioning sequence number
of each first sub-image of the image along the first direction
according to the parameter information of the first virtual section
line segment, the angle between the first virtual section line
segment and a line extending through both the view point and one of
the two endpoints of the first virtual section line segment, the
angle between the first virtual section line segment and a line
extending through both the view point and the other of the two
endpoints of the first virtual section line segment.
[0057] In embodiments of the disclosure, the view point may align
with the center of the flat display or be deviated from the center
of the flat display, and a positioning sequence number of each
first sub-image of the image along the first direction can be
determined according to the parameter information of the first
virtual section line segment (such as position coordinates of the
view point in relation to the flat display), the angle .theta.2
between the first virtual section line segment l3 and a line l1
extending through both the view point and one of the two endpoints
of the first virtual section line segment l3, the angle .theta.1
between the first virtual section line segment l3 and a line l2
extending through both the view point and the other of the two
endpoints of the first virtual section line segment l3. As shown in
FIG. 8, taking a line connecting the view point P with the
projection of the view point P onto the flat display as a central
axis and starting from the projection, the first sub-images A1, A2
and A3 are arranged and numbered in sequence along the first
direction, and the first sub-images B1 and B2 are arranged and
numbered in sequence along a direction opposite to the first
direction. It should be noted that, in FIG. 8, five first
sub-images are provided illustratively for ease of description, but
the embodiments of the disclosure are not limited thereto. Given
that the first sub-images of the image to be displayed are arranged
along the first direction, the line is used as the central axis and
the projection is used as a start point, the first sub-images are
arranged and numbered in sequence along the first direction and a
direction opposite thereto, respectively. For example, if M first
sub-images are arranged along the first direction starting from the
projection, and N first sub-images are arranged along a direction
opposite to the first direction starting from the projection, the
positioning sequence numbers of the first sub-images along the
first direction are set as BN, BN-1, BN-2, B2, B1, A1, A2, . . . ,
AM-1, AM, where, M and N are both integers larger than 1.
[0058] Step 343 includes calculating the compensation ratio along
the first direction for each first sub-image of the image to be
displayed, according to the positioning sequence number of each
first sub-image of the image along the first direction, the
curvature radius of the first virtual curved display plane, the
distance from the view point to the flat display, and the arc
length of each of the first elemental display units along the first
direction.
[0059] Given the positioning sequence number of each first
sub-image of the image to be displayed along the first direction,
the curvature radius R of the first virtual curved display plane,
the distance C from the view point to the flat display, and the arc
length X0 of each of the first elemental display units along the
first direction, the compensation ratio k may be calculated as
follows:
Kn = C [ tan ( n .times. X 0 R ) - tan ( n .times. X 0 - X 0 R ) ]
, ##EQU00005##
[0060] where n is a positive integer, and n.epsilon.[1, N] or
n.epsilon.[1, M], and
[0061] Herein, n represents the positioning sequence number of the
first sub-image of the image along the first direction, for
example, the compensation ratio Kx for the first sub-image B.sub.x
along the first direction is calculated as:
Kx = C [ tan ( x .times. X 0 R ) - tan ( x .times. X 0 - X 0 R ) ]
, ##EQU00006##
x is a positive integer in the range of 1 to N.
[0062] On the basis of the above embodiments, embodiments of the
disclosure provide a method for calculating the compensation ratio
along the second direction for each second sub-image of the image
to be displayed, which can include:
[0063] Step 410 includes calculating the angle between the second
virtual section line segment and a line extending through both the
view point and one of the two endpoints of the second virtual
section line segment, and the angle between the second virtual
section line segment and a line extending through both the view
point and the other of the two endpoints of the second virtual
section line segment, according to the position information of the
view point relative to the flat display and the parameter
information of the second virtual section line segment;
[0064] Step 420 includes determining a second virtual curved
display plane according to the parameter information of the second
virtual section line segment, the angle between the second virtual
section line segment and the line extending through both the view
point and one of the two endpoints of the second virtual section
line segment, and the angle between the second virtual section line
segment and the line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment, where, the second virtual curved display plane contains
the second curved line;
[0065] Step 430 includes dividing equally the second virtual curved
display plane into a plurality of second elemental display units
along a second direction, and obtaining the arc length of each of
the second elemental display units along the second direction,
where each of the plurality of second elemental display units
corresponds to one of the plurality of second sub-images; and
[0066] Step 440 includes calculating a compensation ratio along the
second direction for each second sub-image of the image to be
displayed, according to the parameter information of the second
virtual section line segment, the angle between the second virtual
section line segment and the line extending through both the view
point and one of the two endpoints of the second virtual section
line segment, the angle between the second virtual section line
segment and the line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment, and the arc length of each of the second elemental display
units along the second direction.
[0067] Further, the Step 440 includes calculating a compensation
ratio along the second direction for each second sub-image of the
image to be displayed, according to the parameter information of
the second virtual section line segment, the angle between the
second virtual section line segment and the line extending through
both the view point and one of the two endpoints of the second
virtual section line segment, the angle between the second virtual
section line segment and the line extending through both the view
point and the other of the two endpoints of the second virtual
section line segment, and the arc length of each of the second
elemental display units along the second direction includes:
[0068] Step 441 includes calculating a curvature radius of the
second virtual curved display plane, according to the parameter
information of the second virtual section line segment, the angle
between the second virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the second virtual section line segment, and the angle between
the second virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the second virtual section line segment;
[0069] Step 442 includes determining a positioning sequence number
of each second sub-image of the image along the second direction
according to the parameter information of the second virtual
section line segment, the angle between the second virtual section
line segment and a line extending through both the view point and
one of the two endpoints of the second virtual section line
segment, the angle between the second virtual section line segment
and a line extending through both the view point and the other of
the two endpoints of the second virtual section line segment;
and
[0070] Step 443 includes calculating the compensation ratio along
the second direction for each second sub-image of the image to be
displayed, according to the positioning sequence number of each
second sub-image of the image along the second direction, the
curvature radius of the second virtual curved display plane, the
distance from the view point to the flat display, and the arc
length of each of the second elemental display units along the
second direction.
[0071] It is noted that the method for calculating the compensation
ratio along the second direction for each second sub-image of the
image to be displayed is similar to the method for calculating the
compensation ratio along the first direction for each first
sub-image of the image to be displayed, which is not repeated
here.
[0072] Embodiments of the disclosure further provide an image
displaying system, and FIG. 9 is a schematic diagram showing the
structure of an image displaying system, according to embodiments
of the disclosure. As shown in FIG. 9, the image displaying system
includes a flat display 91, a position detector 92 and an image
compensation chip 93.
[0073] The position detector 92 disposed on a frame 911 of the flat
display 91 is configured to obtain position information of a view
point P in relation to the flat display 91.
[0074] The image compensation chip 93 is disposed on a driving
panel 912 of the flat display 91 and configured to: divide equally
an image to be displayed into a plurality of first sub-images along
a first direction; calculate a compensation ratio along the first
direction for each first sub-image of the image to be displayed
according to the position information of the view point P relative
to the flat display 91 and the parameter information of a first
virtual section line segment of the flat display 91; and compensate
each first sub-image of the image along the first direction, where,
the first direction is parallel to the display surface of the flat
display, the first virtual section line segment has two endpoints
located on the frame of the flat display, is extended along the
first direction, and is extended through a projection of the view
point onto the flat display 91.
[0075] The flat display 91 is configured to display the compensated
first sub-images so that visual angles at the view point for the
compensated first sub-images are equal.
[0076] In embodiments of the disclosure, each first sub-image of
the image to be displayed is compensated in the first direction of
the flat display so that the visual angles for the compensated
first sub-images along the first direction are identical, thus the
display effect of the curved-surface display is achieved by the
flat display.
[0077] On the basis of the above embodiments, optionally, the
position detector includes at least two cameras. The position
information of the view point in relative to the flat display is
obtained by at least two cameras.
[0078] On the basis of the above embodiments, optionally, the size
of each compensated first sub-image of the image along the first
direction is larger than or equal to the size of one sub-pixel of
the flat display along the first direction.
[0079] On the basis of the above embodiments, optionally, the image
compensation chip is further configured to:
[0080] divide equally the image to be displayed into a plurality of
second sub-images along a second direction parallel to the display
surface of the flat display and perpendicular to the first
direction; calculate a compensation ratio along the second
direction for each second sub-image of the image according to the
position information of the view point relative to the flat display
and the parameter information of the second virtual section line
segment; and compensate each second sub-image of the image along
the second direction, where, the second virtual section line
segment has two endpoints located on the frame of the display
device, is extended along the second direction, and is extended
through a projection of the view point onto the flat display.
[0081] The flat display is configured to display the compensated
second sub-images, so that visual angles at the view point for the
compensated second sub-images are equal.
[0082] In such configuration, advantageously, the flat display can
simultaneously achieve the display effect of the curved-surface
display in both the first direction and the second direction to
improve visual experience.
[0083] Further, the size of each compensated second sub-image of
the image along the second direction is larger than or equal to the
size of one sub-pixel of the flat display along the second
direction.
[0084] Optionally, the image compensation chip includes an image
capture module, an image division module, a calculation module and
a compensation module.
[0085] The image capture module is configured to capture an image
to be displayed.
[0086] The image division module is configured to divide equally
the captured image into a plurality of first sub-images along a
first direction; and divide equally the captured image into a
plurality of second sub-images along a second direction.
[0087] The calculation module is configured to calculate a
compensation ratio along the first direction for each first
sub-image of the image according to the position information of the
view point relative to the flat display and the parameter
information of the first virtual section line segment; and
calculate a compensation ratio along the second direction for each
second sub-image of the image according to the position information
of the view point relative to the flat display and the parameter
information of the second virtual section line segment.
[0088] The compensation module is configured to compensate each
first sub-image of the image along the first direction according to
the compensation ratio along the first direction for the first
sub-image of the image; and compensate each second sub-image of the
image along the second direction according to the compensation
ratio along the second direction for the second sub-image of the
image.
[0089] Further, the image displaying system further includes:
[0090] A storage device configured to store the parameter
information of the first virtual section line segment of the flat
display and the parameter information of the second virtual section
line segment of the flat display.
[0091] Optionally, the calculation module includes:
[0092] An angle information calculation unit configured to
calculate an angle between the first virtual section line segment
and a line extending through both the view point and one of the two
endpoints of the first virtual section line segment and an angle
between the first virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the first virtual section line segment, according to the position
information of the view point relative to the flat display and the
parameter information of the first virtual section line segment of
the flat display; and calculate an angle between the second virtual
section line segment and a line extending through both the view
point and one of the two endpoints of the second virtual section
line segment, and an angle between the second virtual section line
segment and a line extending through both the view point and the
other of the two endpoints of the second virtual section line
segment, according to the position information of the view point
relative to the flat display and the parameter information of the
second virtual section line segment of the flat display;
[0093] A virtual curved display plane calculation unit configured
to determine a first virtual curved display plane according to the
parameter information of the first virtual section line segment of
the flat display, the angle between the first virtual section line
segment and a line extending through both the view point and one of
the two endpoints of the first virtual section line segment, and
the angle between the first virtual section line segment and a line
extending through both the view point and the other of the two
endpoints of the first virtual section line segment; and determine
a second virtual curved display plane according to the parameter
information of the second virtual section line segment of the flat
display, the angle between the second virtual section line segment
and the line extending through both the view point and one of the
two endpoints of the second virtual section line segment, and the
angle between the second virtual section line segment and the line
extending through both the view point and the other of the two
endpoints of the second virtual section line segment;
[0094] An elemental display unit division unit configured to divide
equally the first virtual curved display plane into a plurality of
first elemental display units along a first curved line, and obtain
the arc length of each of the first elemental display units along
the first curved line, where each of the plurality of first
elemental display units corresponds to one of the plurality of
first sub-images; and divide equally the second virtual curved
display plane into a plurality of second elemental display units
along a second direction, and obtain the arc length of each of the
second elemental display units along the second direction, where
each of the plurality of second elemental display units corresponds
to one of the plurality of second sub-images; and
[0095] A compensation ratio calculation unit configured to
calculate the compensation ratio along the first direction for each
first sub-image of the image to be displayed, according to the
parameter information of the first virtual section line segment of
the flat display, the angle between the first virtual section line
segment and a line extending through both the view point and one of
the two endpoints of the first virtual section line segment, the
angle between the first virtual section line segment and a line
extending through both the view point and the other of the two
endpoints of the first virtual section line segment, and the arc
length of each of the first elemental display units along the first
direction; and calculate a compensation ratio along the second
direction for each second sub-image of the image to be displayed,
according to the parameter information of the second virtual
section line segment of the flat display, the angle between the
second virtual section line segment and the line extending through
both the view point and one of the two endpoints of the second
virtual section line segment, the angle between the second virtual
section line segment and the line extending through both the view
point and the other of the two endpoints of the second virtual
section line segment, and the arc length of each of the second
elemental display units along the second direction.
[0096] Optionally, the compensation ratio calculation unit
includes:
[0097] A distance calculation sub-unit configured to calculate a
curvature radius of the first virtual curved display plane and the
distance from the view point to the flat display, according to the
parameter information of the first virtual section line segment,
the angle between the first virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the first virtual section line segment, and the angle between
the first virtual section line segment and a line extending through
both the view point and the other of the two endpoints of the first
virtual section line segment; and calculate a curvature radius of
the second virtual curved display plane, according to the parameter
information of the second virtual section line segment, the angle
between the second virtual section line segment and a line
extending through both the view point and one of the two endpoints
of the second virtual section line segment, and the angle between
the second virtual section line segment and a line extending
through both the view point and the other of the two endpoints of
the second virtual section line segment;
[0098] A positioning sequence number sub-unit configured to
determine a positioning sequence number of each first sub-image of
the image along the first direction according to the parameter
information of the first virtual section line segment, the angle
between the first virtual section line segment and a line extending
through both the view point and one of the two endpoints of the
first virtual section line segment, the angle between the first
virtual section line segment and a line extending through both the
view point and the other of the two endpoints of the first virtual
section line segment; and determine a positioning sequence number
of each second sub-image of the image along the second direction
according to the parameter information of the second virtual
section line segment, the angle between the second virtual section
line segment and a line extending through both the view point and
one of the two endpoints of the second virtual section line
segment, the angle between the second virtual section line segment
and a line extending through both the view point and the other of
the two endpoints of the second virtual section line segment;
and
[0099] A compensation ratio calculation sub-unit configured to
calculate the compensation ratio along the first direction for each
first sub-image of the image to be displayed, according to the
positioning sequence number of each first sub-image of the image
along the first direction, the curvature radius of the first
virtual curved display plane, the distance from the view point to
the flat display, and the arc length of each of the first elemental
display units along the first direction; and calculate the
compensation ratio along the second direction for each second
sub-image of the image to be displayed, according to the
positioning sequence number of each second sub-image of the image
along the second direction, the curvature radius of the second
virtual curved display plane, the distance from the view point to
the flat display, and the arc length of each of the second
elemental display units along the second direction.
[0100] It should be noted that the above description describes
embodiments and technical principles of the disclosure. Those
skilled in this art will understand that the disclosure is not
limited to the specific embodiments described herein, and various
apparent changes, rearrangements and substitutions may be made
without departing from the protecting scope of the disclosure.
Therefore, although the disclosure has been described in detail as
above in connection with the embodiments, the disclosure is not
limited thereto and may include other embodiments without departing
from the scope of the disclosure
[0101] Various modifications and additions can be made to the
exemplary embodiments discussed without departing from the scope of
the disclosure. For example, while the embodiments described above
refer to particular features, the scope of this disclosure also
includes embodiments having different combinations of features and
embodiments that do not include all of the described features.
Accordingly, the scope of the disclosure is intended to embrace all
such alternatives, modifications, and variations as fall within the
scope of the claims, together with all equivalents thereof.
* * * * *